Solve for b
b=6
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2\left(b+4\right)=5\times 4
Variable b cannot be equal to -4 since division by zero is not defined. Multiply both sides of the equation by 5\left(b+4\right), the least common multiple of 5,b+4.
2b+8=5\times 4
Use the distributive property to multiply 2 by b+4.
2b+8=20
Multiply 5 and 4 to get 20.
2b=20-8
Subtract 8 from both sides.
2b=12
Subtract 8 from 20 to get 12.
b=\frac{12}{2}
Divide both sides by 2.
b=6
Divide 12 by 2 to get 6.
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